Denon AVR-790

23
AVR-1910/1620/1610/790/590
Input S
Input CVBS
OK
OK
Check V±5V，4094_PWR(+5V)
OK
Check input selector and
surrounding circuitry soldering.
Output V：
IC1901 24pin
Input V：
Check output of input selector.
To troubleshooting 1.1
Power not turn on.
+5V：
CN1018 3pin
Check connection of
iPod Doc.
Check input of VIDEO buffer.
Check surrounding circuitry
soldering of OSD IC.
Check input of OSD IC.
Input V：
IC1905 17pin
IC1901 12pin
OK
NG
Check input selector and
surrounding circuitry soldering.
Input
COMPONENT
V±5V
NG
OK
A
Input
CVBS or S
-5V：
CN1018 4pin
4094_PWR(+5V)：
-5V：
CN1018 4pin
To troubleshooting 1.1
Power not turn on.
NG
CN1018 3pin
+5V：
B
Check output of input selector. NG
Output V：
IC1906 3pin
Check output of VIDEO buffer.
IC1905 13pin
NG
Check cable between main unit
and monitor or check monitor.
OK
CN1018 1pin
Check output of VIDEO buffer
(IC19000A) and surrounding
circuitry soldering.
Check output of VIDEO buffer
(IC1904B) and surrounding
circuitry soldering.
NG
OK
NG
NGCheck output of OSD IC.
Output V：
OK
Check cable between main unit
and monitor or check monitor.
IC1907 24pin
IC1907 22pin
IC1907 20pin
Output Y：
Output Cb：
Output Cr：
Check surrounding circuitry
soldering of VIDEO buffer.